Indicator diagram based AC electric energy meter

Details Indicator diagram based AC electric energy meter Indicator diagram based AC electric energy meter

1980-02-08

1981-08-04

Krass, Errol A.

Boots, shoes, and leggings

324142, G01R 2106

Patent

active

042825768

ABSTRACT:
A first input signal representative of the voltage component is integrated producing an integral signal. The integral signal is compared to fixed reference potentials. A second input signal representative of the current component is sampled when the instantaneous magnitude of the integral signal equals a reference potential. The sample value is digitized and the integrator is reset by variable width reset pulses. Successive sample values are accumulated producing totalized values representative of the time integral of the product of the current component and the time integral of the voltage component, or energy.

REFERENCES:
patent: 3760273 (1973-09-01), Burkett et al.
patent: 4077061 (1978-02-01), Johnston et al.

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